> As a developer, I don't have to deal with servers, disks, networks, logs, metrics, ... Yes, until things don't work as they supposed to. Disks and networks

> As a developer, I don't have to deal with servers, disks, networks, logs, metrics, ... Yes, until things don't work as they supposed to. Disks and networks also don't matter if your application is simple. Disks are pointless if you don't keep a state. Networks will suddenly matter more when you start hiring its capacity. If your application is simple, you can also run it on a single machine and don't care about any of the things you listed. But just because those things were abstracted from you doesn't mean they don't exist and their limitations don't apply.